Glucose-stimulated efflux of fura-2 in pancreatic beta-cells is prevented by probenecid.

Abstract:

:Fura-2 loaded pancreatic beta-cells, isolated from obese hyperglycemic mice, were studied with respect to cytoplasmic free Ca2+ concentration ([Ca2+]i), insulin release and efflux of indicator. In the absence of glucose there was a continuous efflux of fura-2, which was markedly increased by stimulation with a high concentration of the sugar. Probenecid both reduced basal efflux of fura-2 and prevented that promoted by glucose. There was no interference of the drug with glucose-induced either insulin release or rise in [Ca2+]i. When applying fura-2 in pancreatic beta-cells, the use of probenecid markedly improves the measurements of [Ca2+]i.

authors

Arkhammar P,Nilsson T,Berggren PO

doi

10.1016/0006-291x(89)92426-1

subject

Has Abstract

pub_date

1989-02-28 00:00:00

pages

223-8

issue

1

eissn

0006-291X

issn

1090-2104

pii

0006-291X(89)92426-1

journal_volume

159

pub_type

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